Select the artist to be omitted by clicking on the "skull" to its right. Immediately bookmark the resulting page (This is now your "filtered" page.) Repeat with each artist to be "deleted". To "mass delete" multiple artists, click on "Edit List," located on the top right of the page. Select the checkboxes next to the artist name to determine who gets filtered out, then press the "Okay" button at the bottom of the (Long) artist list. Bookmark your new "filtered" page.